Flight Reliability
DL 1934 · Delta Air Lines
Salt Lake City → Bozeman (SLC–BZN)89% of its flights flew this route. The rest (FLL–JFK) are included in these numbers.
- 89%
- Arrive within 15 minutes
- 3 min early
- Average arrival delay
- 0%
- Cancelled
- 8 min early
- Median arrival delay
Based on 219 historical flights. Data through May 2026.
What the data says
Mornings have a slight edge.
Departures between 9 AM–12 PM arrived on time 91% of the time, against 88% between 9 PM–12 AM.
Thursdays have been rough.
DL 1934 arrived on time 97% of the time on Mondays and just 80% on Thursdays. That gap is worth planning around.
Better than the Delta Air Lines network average.
DL 1934 arrived on time 89% of the time, versus 81% across the Delta Air Lines network.
It basically never cancels.
Out of 219 scheduled flights, only 0.0% were cancelled.
The breakdown
- Mon97%(32 flights)
- Tue94%(32 flights)
- Wed90%(31 flights)
- Thu80%(30 flights)
- Fri87%(31 flights)
- Sat93%(30 flights)
- Sun81%(31 flights)
- 9 AM–12 PM91%(23 flights)
- 3–6 PM—(6 flights)
- 9 PM–12 AM88%(188 flights)
Jun 83% → Apr 94% on time
| Month | On-time percentage | Flights |
|---|---|---|
| June 2025 | 83% | 23 |
| July 2025 | 81% | 31 |
| August 2025 | 84% | 31 |
| September 2025 | 93% | 30 |
| October 2025 | 97% | 31 |
| November 2025 | 93% | 29 |
| December 2025 | 90% | 19 |
| April 2026 | 94% | 18 |
- Departures on time
- 89%
- Diverted
- 0.9%
- Flights flown
- 217
- Months covered
- 9
Same route, other flights
Keep nerding
Based on 219 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.